- Digestive
- Nervous
- Water vascular
- Reproductive
Category: Biology etea medical mcqs
- Insecta
- Arachnida
- Crustacea
- Myriapoda
- A nervous system
- A digestive system (in tapeworms)
- Reproductive organs
- Excretory system
- Sexual reproduction
- Asexual reproduction and colony formation
- Larval development
- Regeneration of lost parts
- Habitat
- Reproductive method
- Type of spicules
- Feeding mechanism
- Bat
- Kangaroo
- Dolphin
- Platypus
- Larynx
- Trachea
- Syrinx
- Air sacs
- Squamata
- Testudines
- Crocodilia
- Rhynchocephalia
- Reptiles
- Birds
- Amphibians
- Mammals
- Spinal cord
- Notochord
- Brain
- Nerve net
- Ray-finned fish
- Lobe-finned fish
- Cartilaginous fish
- Jawless fish
- Asteroidea
- Ophiuroidea
- Echinoidea
- Holothuroidea
- Gastropoda
- Bivalvia
- Cephalopoda
- Polyplacophora
- Chelicerata
- Myriapoda
- Crustacea
- Hexapoda
- A nerve net
- A dorsal hollow nerve cord
- Ladder-like nervous system
- A single ganglion
- Annelida
- Mollusca
- Platyhelminthes
- Nematoda
- Planula
- Polyp
- Medusa
- Hydroid
- Monotremes
- Marsupials
- Placentals
- All mammals
